Antenna array with low Rx and Tx sidelobe levels
| DWPI Title: Antenna array for mitigating or reducing sidelobe levels, has first antenna subarray comprising antenna element, second antenna subarray comprising first set of elements, third antenna subarray comprising second set of antenna elements |
| Abstract: The various technologies presented herein relate to mitigating or reducing sidelobe levels during operation of an antenna array. Power coefficients operating across an antenna array are tapered to facilitate a power concentration at central region of the antenna array while power coefficients of a lower magnitude are generated at the periphery of the antenna array. Power coefficient variation can be effected by at least one of electrical path length, number of antennas being powered in a particular antenna subarray, a number of T-splitters incorporated into an electrical path servicing an antenna, etc. Electrical coupling of a pre-T/R stripline and a post-T/R stripline can be achieved in conjunction with operation with a dielectric layer, wherein the dielectric layer acts as a dielectric at the Ku frequency band. Further, phase delay can be applied to at least one electrical signal to facilitate concurrent delivery of power across the antenna array. |
| Use: Antenna array for mitigating or reducing sidelobe levels. |
| Advantage: The array eliminates requirement for attenuation to be applied to each antenna element, which improves the energy efficiency of the antenna array compared with an attenuated array. |
| Novelty: The array (100) has a first antenna subarray comprising an antenna element. A second antenna subarray comprises a first set of antenna elements. A third antenna subarray comprising a second set of antenna elements, where the second antenna subarray includes a greater number of antenna elements than the first antenna subarray, the third antenna subarray comprises a greater number of antenna elements than the second subarray, the first antenna subarray is located closer to the center point of the antenna array than the second antenna subarray, the second antenna subarray is located closer to the center point of the antenna array than the third antenna subarray. The sum of the antenna power coefficients of the first set of antenna elements in the second antenna subarray is greater than the sum of the antenna power coefficients of the second set of antenna elements in the third antenna subarray. |
| Filed: 4/23/2013 |
| Application Number: US13868864A |
| Tech ID: SD 12255.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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